Deelectrolizer



M. A. CLINTON ET AL DEELECTROLIZER Filed May 20. 1922.

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63 I -14 a Michael Afilinibn 10. MnrKW mallet 6 heir W a WM Patented May 1, 1928.

MICHAEL A. CLINTON AND MARK W. COLLET, OF PHILADELPHIA,

ASSIGNOB-S TO CLINTON PRINTERS ACCESSORIES DEELECTROLIZER.

Application filed May 20, 1922.

Our device belongs to that general type of de-electrolizers used to remove charges of static electricity, i. e., charges of electricity, collected upon dielectric material, or 5 insulated conductors, and specifically to that used to remove charges of electricity collected upon individual sheets of paper (a dielectric material) in the process of printing. It contains a pair of conductors, placed one on each side of the sheet of paper, and uses them especially in conjunction with mechanism for giving the paper and the conductors in electrical connection with each other and a movement relative to each other, so that the conductors electrically connected to each other will sweep over both sides of the sheet of paper, making a suilicient contact therewith to remove the electric charge from it. This they will 29 do, as the charges on the opposite side of the sheet are opposite in polarity, and, as

these conductors are grounded, any residual charge resulting from the existence of a greater charge on one side of the paper than on the other, will flow into the ground. The mechanism requires generally a particular construction, owing to the problems presented by the printing press, especially when the paper is freed from the electrical charge at the delivery end of the press, because the papers movement then is likely to be stopped or retarded by a stationary conductor in electrical contact with it, even if of flexible material. smearing of the printing also may occur under such conditions. lVe have devised therefore, as well as the positioning of the conductors, a form of 'anslation mechanism whereby the conductors move so that the portion of these conductors or certain of them contacting electrically with the paper, move in the same direction and substantially at the same speed as the paper does; The substantial character of the de-electrolizer always remains the same, but the details of construction by which it is adapted to various forms of presses varies. lVe will therefore now describe the best form in which, as we are now aware, our invention can be embodied livery printing press,

so as to be used with a direg l t Constant d e- Serial No. 562,514.

Fig. 1 is an elevation of PENNSYLVANIA,

COMPANY.

the back of the deelectrolizer as it will appear when mounted on a press. Fig. 2 is an e levation of the inside of one of the supporting clamps and its attachments viewed from the line clamps.

a plane containing and lying parallel to the Fig. 3 is an elevation of the outside of the other clamp looking toward the side of the machine. Fig

tary elevation of a porti t is a fragmenon of one side of the machine as attached to a press and viewed from the back, duct-or being omitted.

the stationary con- Fig. 5 is a view partly in a longitudinal section of one end of the spindle of the upper con ductor. Fig. 6 is a longitudinal section on an end of the revolving lower conductorf (Figs. 5 and 6 on an enlarged scale). Fig. 7 is asection on line 77 of Fig. 6. Fig. 8 is a section on line 88 of Fig. 5. on line 9-9 of Fig. 4;. on line 1010 of Fig. 1.

The upper de-electro Fig. 9 is a section Fig. 10 is a section lizing conductor,

marked as a whole 50, revolves above the path of the electrically charged paper, and should be of sufficient diameter to insure that the paper will not rise above its axis of revolution. Frequently paper rises slightly from the tapes of the delivery table. The conductor 50 consists, in the form illustrated,

of rods, 12, substantially other, and supported by which can be utilized to tions, as will be below rods, 12, carry conducting erably in the form of tins ally therefrom, which is Y parallel to each hubs, 15 and 10,

perform other funcdescribed. These material, 6 prefel projecting radifound in practice an excellent material on account of its flexibility and pointedness, to make the electrical contact between the conductor and the sheet of paper to be freed from the electrical charge. These hubs, 15, and 10, are carried by a spindle, 13, carried by bearings, 16,

from the standards, 7, 7.

An electrical connection is maintained between the entire length of the conducting the bearings, 16, or one o ductor, 50, can be rotated material, 63, and f them. The conin any convenient manner, but should follow the speed of the press.

We have shown it with the hub, 15, res ng n a tap 3, W11

ich passes around.

the pulley, 1, of the delivery table. Such tapes are largely used in printing presses, and as the power needed to drive the conductor, 50, is very small, the friction of the tape on the outside of the hub, 15, will be enough to drive the revolvable conductor, 50. The standards, 7, are carried by the wooden or other insulating supports, l, 1, and can turn slightly in bearings therein. The standard, 7, also carries the conductor, 21, which comes in the head with the lowerside of the sheet of paper. This conductor preferably revolves also, and is carried by one of the bearings 22, 22, in the heads, 8, The bearings, 2 22, 22, are each at the same distance from the bearing, 16:namely. substantially the sum or the radii of the tuction pulley, 11, and the hub, 10. A triction drive is quite as good as gearing to (ll'tTQ the lower conductor. The lower conductor, 29, can be mounted in any of the bearings, 22, 22, changing the particular bearing, to suit the paper.

Thesupports, l, r, iQl'Vt-E as a jaw of a clamp that carries the entire device. In a 1 number of varieties of presses the delivery lit) whichthe' support, l, can be clamped. 9 is the opposing jaw of the clamp, the two jaws being connected by the link, 5. This rod. 2, also carries the pulley, 1, as a loose pulley, in a form oi press we have illustrated as being that to which our device is attached, and when our device is used with this press,

the distance from the axis of this rod to the centre of the bearing, 16, equals the sum of the radius of the pulley, 1, with the belt, 3,

40, in conjunction with a pin Pl? limits the.

journals inoveniient. This mechanism need e placed at one endouly ot the spindle. 13. 1n the lower conductor 27, a shouldered spindle, l6, reciprocates in a socket. is, which we can make from a piece ottuhing, and isurged outward by the spring, r -3. that rests on the abutment. 43., T he rods, 12. we can make of twohalt-rounds, (see Fig. 6) clamping the tinsel 63 between them and held together by thescrews, 26. The lower. conductor 2T 'has two half rounds, 84s and 85, clamping tinsel between them and clamping. upon the tube, 44. (See Fig. 10.)

Thefdevice has also several additionalelet th t wefi nd eXt-remelyusetul in its practical operation. A third conductor, 19, can be placed where it will contact with the lower side of the sheet of paper and is held in place by the pin, and the spring, 20, that is clamped to the support, at, by the stud 21. The hook, 230, catcnes on a keeping means and holds up the device and also can hold up the discharge table. Thishook'is pivoted at 31, and is treeto vibrate between the stops, and and has the peculiarly shaped recess between the points, 35, and 86, the latter point projecting outward sutticiently to make sure that the keeping means will go into the pocket, 34:, and the movement stopped. movement will bring the keeping means beneath the point, so that no matter how.

carelessly the delivery bed is lifted it will be stopped and held, and the de-electrolizer protected from in ury. The stud, 21, may

have a retainer, 29, by which a spring 18-, is

retained which terms the conductor between the stud, 21, and the standard I. This spring catches on an arm, 92, ol' the standard '4', and puts a tension oil-the frictional? pulleys. tablehas a stationary transverse rod, to v The electrical connections are made as follows :between the conductors, 50, vand 27,.

through the bearings, 16, and and the standards '7 and 8; between these conductors and the conductor, 19, through the conductor, 1S, connecting electrically the stud, 21, and the standard. 7, the stud, 21, holding and being in electrical connection with, the spring, 20, which in turn makes electrical connection with the pin, 2", and conductor, 19. The ground unit 93 leads oil from the socket, 6, in the standard, 7. The insulation of the conductors, 50, 2? and 19 from the press accomplished by making the support, l of wood or other nonconductor.

' A bolt 6%- provided' with the wing nut 63 may ser o to tighten the jaws l and 9 of the clamp: forming the support for the standard 7.

Ve claim r Y 1. In a. device for discharging charges of electricity collected upon sheets of paper in the course of printing upon it, the combination of mechanism giving the paper a mo.- tion, along a substantially horizontal path. conductors positionm'l opposite each of the faces oi the paper, above and below the path traversed thereby and extending across the path traversed by it, said conductors making electrical connection with. each face of the paper, the upper or" said conductors rotating at such a speed that its circumferential portions in electrical contact with theuppertace of the paper will move at the same rate of speed as the horizontal-translar tion movement of the paper.

over substantially the entire surface of each side of the paper.

3. The device as defined in claim 1, with the following additional element :the conductors being insulated from the press.

1-. The device as defined in claim 1, with the following adidtional elements in combination therewith :tlie conductors passing over substantially the entire surface of each side of the paper and being in electrical connection with a lead off conductor and insulated from the press.

5. In a device for discharging charges of electricity collected upon. sheets of paper in the course of printing upon it, the combination of mechanism giving the paper a motion along a substantially horizontal path, conductors positioned opposite each of the faces of the paper above and below the path traversed thereby and extending across the path traversed by it, said conductors making electrical connection with each face of the paper, each of said conductors rotating at a speed such that the circumferential portion of each in electrical contact with the faces of the paper will move at the same rate of speed as the movement of the paper.

6. In a device for removing charges of electricity from the faces of freshly printed paper, the combination with delivery mechanism giving a horizontal movement to the paper being discharged from the press and supporting the lower face of said paper, of a.

revolvable conductor positioned above the path of said paper, a conductor positioned below the lower face of the paper, said conductors being in electrical connection with the upper and lower faces of said paper respectively and extending across the path of the same and mechanism driven from the press mechanism and timed therewith giving to said revolving conductor a. speed of rotation such that the portion thereof in mechanical contact with the face of the paper will move at the speed of the translation movement of the paper.

7. The device as defined in claim 6 with the =fOllOWiI1g additional elements :-the said upper and lower conductors being in electrical connection with each other and with a ground conductor.

8. The device as defined in claim 6 with the following additional element-:-the said driving mechanism being driven through by mechanism of the press.

9. The device as defined in claim 6 with the following additional elements :the said upper conductor being positioned above the path traversed by the paper being provided with tinsel for making the electrical connection with the paper.

10. The device as described in claim 6 with the following additional elements :-the said revolvable conductor having its axis sufficiently above thepath of the paper to prevent the latter from rising above the height of this axis.

11. The combination in a device for re moving charges ofelccti'icity from the surfaces of freshly printed paper, of rotatable conductors positioned on each side of the path of the sheet of paper and making electrical connection therewith, mechanism giving these conductors a rotation such that their peripheries will move at substantially the same speed and in the same direction as the paper, and electrical connections between the conductors.

12. The device as defined in claim 11 with the following additional element :the said conductors being provided with radially pro-- 'jecting, pointed and pliable conducting ma.-

terial for making the electrical connections with the faces of the paper.

13. The device as defined in claim 11 with the following additional element :the said conductors being mounted on standards carried by and insulated from the press.

14. The device as defined in claim 11 with the following additional elements :the said conductors being mounted on standards clamped to the press, and being insulated from the press.

15. The device as defined in claim 11. with the following additional eleinent:and an additional conductor making electrical contact with the paper, and coming into contact therewith, before it contacts with the revolvable rollers, said conductor being in electrical connection with said revolvable conductors.

1.6. In a device for discharging charges of electricity from sheets of paper, the combination of a revolving conductor, positioned above the path of the paper and in electrical connection therewith, standards having bearings for the revolving conductor, another conductor positioned beneath the path of said paper also having hearings in said standards and means for changing the positions of the bearings for the conductor positioned below the path traversed by the pa per without changing the distance between the said conductors.

17. The device as defined in claim 16 with the following additional element:the conductor positioned beneath the path traversed by the paper being rev-olvahle and driven from the conductor positioned above the path of the paper.

18. The device as defined in claim 16 with the following additional element, namely, and a hook for holding the device in an elevated position, having retaining means for preventing its accidental disengagement.

19. The device as defined in claim 16' with the following additional elementr-and an outwardly lengthwise springing journal for said revolving conductor.

20. The c mbination in a device for discharging charges of electricity from the surfaces of sheets of paper, comprising revolvable conductorspositionedi on both sides of the sheet of paper, mechanism for revolving I said conductors at substantially the sameconductors being velectrically connected to each other and to a. grennd conductor.

22. The device as defined in claim 20 with the following additional element, namely, the said conductors being electrically connected to; each other and to aground conductor and being insulated from the press.

MICHAEL A. CLINTON. MARK @OLLET. 

